What does the process of diffusion do for the cell? A. moves energy in the cell B. moves oxygen through the cell membrane C. moves water in and out of the cell D. moves proteins through the cell membrane

What does the sequence of nucleotides in DNA code for?

This is an organism that supplies matter and energy, also known as a autotroph, is called?

In a real cell, what does the dna molecule do before it unzips?

What do scientists estimate is the approximate age of earth? A. 660 million years B. 3.5 billion years C. 4.6 billion years D. 12.2 billion years

What is the term for a group of interbreeding organisms that are able to produce fertile young? A. biological species B. ecosystem C. population D. genus

Which component of exercise primarily strengthens your heart?

What two cells are involved in sexual reproduction?

If you were testing how well different laundry soaps cleaned your clothes, the control group would be:

The nurse is describing how to perform a testicular self-examination to a patient. Which of these statements is most appropriate? A. A good time to examine your testicles is just before you take a shower. B.

In which ways are RNA and DNA different? a. RNA has ribose sugar, DNA has deoxyribose sugar b. RNA has uracil, DNA has thymine c. RNA is single-stranded, DNA is a double-helix d. all of the above